39781898116 has 27 divisors (see below), whose sum is σ = 71958885957. Its totient is φ = 19243321920.

The previous prime is 39781898087. The next prime is 39781898119. The reversal of 39781898116 is 61189818793.

The square root of 39781898116 is 199454.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 35876148100 + 3905750016 = 189410^2 + 62496^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39781898119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12364540 + ... + 12367756.

Almost surely, 2^39781898116 is an apocalyptic number.

39781898116 is the 199454-th square number.

It is an amenable number.

39781898116 is a deficient number, since it is larger than the sum of its proper divisors (32176987841).

39781898116 is an frugal number, since it uses more digits than its factorization.

39781898116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500 (or 3250 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 61.

The spelling of 39781898116 in words is "thirty-nine billion, seven hundred eighty-one million, eight hundred ninety-eight thousand, one hundred sixteen".